Five US companies were listed in last year's top 10 and 42 featured in the top 100.

Lockheed Martin remains the world's largest arms producer, with sales of $44.9 billion (€39.3 billion), and widened the gap between it and its nearest rival, Boeing, from $11 billion in 2016 to $18 billion in 2017.

Europe

The UK remained the largest arms producer in Western Europe last year, with arms sales of $35.7 billion (€31.2 billion). It is also the only European country to have a company − BAE Systems − in the top five.

Twenty-four Western European companies were listed in the Top 100. Their combined arms sales of $94.9 billion (€83 billion) accounted for nearly a quarter (23.8 per cent) of the leading 100 companies.